National 5 Biology Problem Solving
Presentation
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Biology
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10th - 11th Grade
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Practice Problem
•
Easy
Kirsty Wong
Used 6+ times
FREE Resource
71 Slides • 26 Questions
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Name another variable that should have been kept constant.
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State 2 variables that should be kept constant for a valid conclusion to be made.
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The fields planted with V cotton were used as a control. Give a reason for using this control.
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The greenhouse containing tomato plants without predators was used as a control experiment. State the purpose of a control in this investigation.
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The results show that leaves from a horizontal stem are bigger than leaves from a vertical stem. Give a reason why these results might not be reliable.
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Suggest one way in which the reliability of the results could be improved.
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State the conclusion.
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What conclusion can be drawn about catalase activity, using the results for carrots only?
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Describe the relationship between the distance from the seawater at low tide and the average number of lugworms per m2.
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Use data from the graph to describe the changes in blood glucose concentration over this 150 minute period.
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When is the rate of increase in antibody concentration the greatest?
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Complete the table by calculating the average width of the leaves from the vertical stem.
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Complete the table to show the average mass of one limpet.
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Calculate the average decrease per year for the abundance of ragwort over the five year period.
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Calculate the average rate of movement of liquid in the glass tubing (mm/minute)
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Complete the table by calculating the percentage change in mass for beaker A.
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Explain why the population decrease was expressed as a percentage rather than a decrease in number.
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Calculate the number of students with straight thumb to hitchhikers thumb as a simple whole number ratio.
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